← Mazda Miata NB (1999-2005 US model years) problems

Crank and cam position sensor problems

Reported · Severity: Low · Years: 1999-2005

Symptoms

Stuttering, cutting out, power loss.

Cause

A forum problem list and year-by-year page both name the crankshaft position sensor, and mention cam angle sensor seal/gasket weaknesses.

Fix (summary)

Sensor replacement is called an easy fix.

Sources

• Common Issues with NB 1998-2005 Miatas — MX-5 Miata Forum (forum thread; read 2026-10-15; search excerpt only)
• Miata problems/maintenance by year — miatayear.com (editorial; read 2026-10-15; search excerpt only)

Summaries are in our own words. Not repair instructions; consult the factory service manual.